Benzothiazines are well‐recognized compounds in medicinal chemistry, and many derivatives have been explored as target structures in drug development. Fused-benzothiazines are of much interest for various fields of science as these scaffolds demonstrate a wide spectrum of biological applications like anti-microbial, anti-malarial, anti-cancer, anti-viral, ant-oxidant, anti-inflammatory, etc.
Benzoheterocycles are heterocycles which are fused with a benzene ring. Coumarone, thianaphthene, benzopyridine, isoquinoline, and dibenzopyridine all belong to this class of compounds.